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→Doppler Effect: Expansion of space, not movement.
==Doppler Effect==
==Doppler Effect==
Isn't this an example of the Doppler Effect? Not merely analogous to it? [[User:KingOfNothing|KingOfNothing]] 20:43, 26 May 2008 (EDT)
Isn't this an example of the Doppler Effect? Not merely analogous to it? [[User:KingOfNothing|KingOfNothing]] 20:43, 26 May 2008 (EDT)
: I'm not sure that the article expresses it all that well, but the Doppler effect is produced by the source moving relative to the observer, whereas some if not most of the redshift is not due to the source moving through space, but due to the space itself between the source and observer expanding (as part of the expansion of the universe). [[User:Philip J. Rayment|Philip J. Rayment]] 08:08, 27 May 2008 (EDT)